JSF2 Static resource caching

Question

Glassfish 3.1.2, Mojarra 2.1.6, SSL activated

I have an question about static resource caching. I´ve read some posts about this but I´m not sure which options we sho

Answer 1

You only need to set Cache-Control. The Expires and Last-Modified are already set by default ResourceHandler (and would override the values set by your filter). The Last-Modified must represent the last modified timestamp of the resource in question. You can obtain it by servletContext.getResource(path).openConnection().getLastModified(). But you don't need to set it here anyway. Just let ResourceHandler handle.

As to versioning, just use resource libraries rightly. You can put a version folder matching regex pattern \d+(_\d+)* in the library folder and the ResourceHandler will serve the newest.

E.g.

/resources/libraryname/1_0/js/file.js
/resources/libraryname/1_1/js/file.js
/resources/libraryname/1_2/js/file.js

The following will then get the one from 1_2:

<h:outputScript library="libraryname" name="js/file.js" />